<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <script>
    'use strict'

    console.log('a')
    console.log("a")
    let name ="zhangsan"
    let msg = `你好呀,${name}`

    arr.slice(3)
  </script>
</head>
<body>

</body>
</html>